Car-truck bolster.



Mm M W 2 SHEETS-SHEET 1- PATENTED MAY 8, 1906. t

3 fW//Vf'a :lv

J. B. BARNES.

UAR TRUCK BOLSTER.

APPLIOATION FILED 1113.1. 190e. L5

f I. P l flllmml I" Il IUE |IIIIIIIIIII ,i 'I 1f IIIIIIIIIII Inm -yw IllWZ 2955935 PATENTBD MAY 8, 1906.

J. B. BARNES. OAR TRUCK BOLSTER.

APPLICATION FILED rnB.1,19oe.

` UNITED STATES PATENT oEEIoE. y,

JOSHUA s.v BARNES, or SPRINGFIELD, 1LLINo1S, Y

CAB-TRUCK BoLsTEn.

Specication of Letters Patent.l

l Application filed February 1, 1906. SerialNo. 299,002.

citizen of the United States, "residing atk Springfield, in theccountyof Sangamon and State of Illinois, have invented a new andl usefulImprovement in Car- Truck Bolsters, of which thefollowingis aSpecification. y

My invention relates to an improvement in that class of car-truckbolster which is ordinarily composed of cast-steel integral through out,and has for its object to reduce weightand obtain a strong, rigid, anddurable bolster.

The invention consists in features of novelty, as hereinafter describedand claimed., reference being had lto the accompanying drawings, formingpart of this specification, whereon- Figure 1 is a top plan view of apreferable construction of my improved car-truck bol- Ster; Fig. 2, aside elevation thereof; Fig. 3,

, an end view of the same; Figs. 4 and 5, vertical transverse sectionsthrough the olster on lines 4 4 and 5 5, respectively, in igs. 1 and 2;Figs. 6, 7, and 8, corresponding views to Figs. 1, 2, and 3 of amodified form of the bolster; and Figs. 9 and 10, cross-sections thereofon lines 9 9 and 10 10, respectively, in Figs. 6 and 7.

Like letters and numerals of reference denote like parts in therespective figures.

Referring to Figs. 1 to 5, a represents my improved truck-bolster,having its body b,

with'the center plate 1, side bearings 2, and

truck-column guide-lugs 3, composed, preferably, of cast-steel integralthrou hout. The

mido'le portion 4 of the body b etween the side bearings 2 ispractically T-shaped in crosssection, having its top flanges 5 at rightangles to the web 6 and united thereto for its entire depth by uprightribs 7, which are arranged transversely to the body b at suitableintervals along the middle portion 4, thel two middle ribs 7 beingpreferably located beneath the center plate 1, one on each side of andat an equal distance from its center. Transversely through the web 6between the middleI ribs 7 and lmmediately beneath the center plate 1 isan opening 8 for the lower projecting end of the king-bolt, (not shoWn,)which passes through the" center Vplate 1 thereat. The web 6 1s formedat the bottom or under side of the body b, which is prefer ably convexlongitudinally with a channel or groove 9, which is circular-sha ed incrosssection and extends the entire ength of the bolster a, its endortions passing through and uniting-with't e end ortions 10 yof the bodyb, which are prefera lybox-shaped in cross-section and adapted on theirunder sires for the spring-seats yin the usual manner. The top` andbottom walls ofeach end portion 10 at each end ofthe body b are unitedto each other in the midle by a web 11, which is inclined outward fromthe top wall at right angles to the tangent of the adjacent end of thelongitudinally-curved channel 9. Through the top flanges 5 of the middleportion 4 andtop walls of the end portions 10, with which they areflush, are formed lightening-holes 12 12,respectively, arranged as shownor in any other desired manner, the outer configuration of the flanges 5being preferably concave from their greatest width at the center plate 1to their junction with the said walls, as shown'. In and along thechannel 9 is placed and laterally held therebya circular truss bar orbolt c, of rolled iron or steel, which extends the entire length of thebody b and through a hole therefor formed through the end web 11 of eachend portion 10, the externally-projecting portion of the bar c beingscrew-threaded and having a nut 13, so that on turning the nuts 13against the webs 11 the bar c is tightened and bears closel against thebottom or bed of the channel 9 or its entire length, thereby forming astrong auxiliary tension member to the bolster a, and enabling thecross-sectional area without loss of strength and ri idity. l

olster a seen In the modification of the in Figs. 6 to 10 two truss-barsc are used in lieu of one, as before described., in which case4 themiddle portion 4 of the body b is preferably I-shaped in cross-sectionand the bot- Paten-'ed May e, 190e. l y

tom channels 9 formed only part way along the under side of the bottomflanges at the outeredges thereof and preferably beneath the centerplate 1 similar channels 9being formed for the bars c through the endportions 10 of the body b adjacent to their side Walls, as shown, thebars c bearing throughout against the under side of the body b', Whichis substantially similar in principle and construction to the body b,previously described,

IIO

jcting thrgngh each end thereo'ffand: meansV 1. A carfbolster,cnlprisilrlg a, czlstfsffeelz bQdy. n zuillg the center plate, sul@lbearmgs,

and `springseats Aintegral' thelwivth, a 11d Y inwing a channel forlnedVints under side, n.tlussr haii adaptedtfo bear wlthl-n the C11 annelagapnst:

tllsafikbogly orvits entire length,y and` pmn bndy', hiying.thefcnerplatre', Side, bearings,

lng--a'.chanelsformed in its under,sideQHtllel fffiliddle.and`@nelpoybiQnsfof'the said bQdy beand siprfingr-seatsintegralherewith Mid,havbear withinth,channel against-thas id bony Y for its entire length,and.vprojectnigftbrough each endlgleljeof, andljmeans forisecnvringand-.i

EDWARD. FUR-ELM

